﻿using System;
using System.Data;
using System.Web;
using System.Drawing;
using System.Drawing.Drawing2D;

public class CaptchaImage
{
    public static Image GenericImage(out string _text, int _width, int _height)
    {
        Bitmap bmp = new Bitmap(_width, _height);
        Graphics g = Graphics.FromImage(bmp);
        Random rnd = new Random();

        // Fill in the background.        
        Rectangle rect = new Rectangle(0, 0, _width, _height);
        HatchBrush hatchBrush = new HatchBrush(HatchStyle.SmallConfetti, Color.Black, Color.Gray);
        g.FillRectangle(hatchBrush, rect);

        g.DrawLine(new Pen(Color.Blue, 1), new Point(0, _height / rnd.Next(2, 4)), new Point(_width, _height / rnd.Next(2, 6)));

        // Get random text
        string text = "abcdefghijklmnopqrstuvxy";
        string s = "";
        for (int i = 0; i < 5; i++)
        {
            s += text[rnd.Next(0, text.Length - 1)];
        }
        _text = s;


        Font f = new Font("Comic Sans MS", 20, FontStyle.Regular);
        Point p = new Point(-2, -7);
        g.DrawString(s, f, Brushes.White, p);

        g.DrawLine(new Pen(Color.Red, 1), new Point(0, _height / rnd.Next(2, 4)), new Point(_width, _height / rnd.Next(2, 6)));

        return bmp;
    }
}
